PM-1064-10G chip is used for optical signal phase modulation and spectral broadening. This device is composed of a high polarization extinction ratio polarizer and an electro-optic phase modulator suitable for use in high-power laser systems. Based on Lithium Niobate (LiNbO₃) material, PM-1064-10G is fabricated with optical waveguides using High Temperature Proton Exchange (HTPE), and group-velocity matched electrodes in the high-frequency region. The PM-1064-10G provides highly reliable performance over wide temperature range and with extended life time in comparison with other competing technologies such as InP and silicon photonics.